Nonlinear Forced Vibration of a Viscoelastic Buckled Beam with 2 : 1 Internal Resonance

Figure 14

Poincaré maps for= (a) 𝛼=0.000037, 𝑏=0.004; (b) 𝛼=0.000032, 𝑏=0.004; (c) 𝛼=0.00002, 𝑏=0.004; (d) 𝛼=0.00005, 𝑏=0.006; (e) 𝛼=0.00005, 𝑏=0.0084; and (f) 𝛼=0.00005, 𝑏=0.01.

(a)

(b)

(c)

(d)

(e)

(f)